function page_ctrl(data_obj) {
    var obj_box=(data_obj.obj_box!== undefined)?data_obj.obj_box:function () {
        return;
    };//翻页容器dom对象,必要参数

    var total_item=(data_obj.total_item!== undefined)?parseInt(data_obj.total_item):0;//数据条目总数,默认为0,组件将不加载

    var per_num=(data_obj.per_num!== undefined)?parseInt(data_obj.per_num):10;//每页显示条数,默认为10条

    var current_page=(data_obj.current_page!== undefined)?parseInt(data_obj.current_page):1;//当前页,默认为1

    var total_page=Math.ceil(total_item/per_num);//计算总页数,不足2页,不加载组件

    if(total_page<2){
        return;
    }

    //在指定容器内加载分页数据

    $(obj_box).append('<div class="page_content"></div>');

    //在指定容器内加载分页插件

    $(obj_box).append('<div class="page_ctrl"></div>');

    function page_even() {

        /*加载数据*/

        function change_content() {

            /*此处根据项目实际自行编写页面显示内容的方法,举例说明:*/

            var page_content='<thead>\n' +
                '            <tr>\n' +
                '                <th>课程名称</th>\n' +
                '                <th>课序号</th>\n' +
                '                <th>代课老师</th>\n' +
                '                <th>上课时间及地点</th>\n' +
                '                <th>课余量</th>\n' +
                '                <th>操作</th>\n' +
                '            </tr>\n' +
                '            </thead>';//当前页内容

            for(var i=0;i<per_num;i++){
                page_content+='<li>'+((current_page-1)*per_num+i+1)+',分页条目</li>';
            }

            page_content+='</ul>';
            $(obj_box).children('.page_content').html(page_content);
        }

        change_content();
        var inp_val=(current_page==total_page)?1:current_page+1;//跳转页数,input默认显示值
        var append_html='<button class="prev_page">上一页</button>';
        for(var i=0;i<total_page-1;i++){
            if(total_page>8&&current_page>6&&i<current_page-3){
                if(i<2){
                    append_html+='<button class="page_num">'+(i+1)+'</button>';
                }
                else if(i==2){
                    append_html+='<span class="page_dot">•••</span>';
                }
            }

            else if(total_page>8&&current_page<total_page-3&&i>current_page+1){
                if(current_page>6&&i==current_page+2){
                    append_html+='<span class="page_dot">•••</span>';
                }else if(current_page<7){
                    if(i<8){
                        append_html+='<button class="page_num">'+(i+1)+'</button>';
                    }else if(i==8){
                        append_html+='<span class="page_dot">•••</span>';
                    }
                }
                //append_html+='<span class="page_dot">•••</span>';
            }

            else{
                if(i==current_page-1){
                    append_html+='<button class="page_num current_page">'+(i+1)+'</button>';
                }

                else{
                    append_html+='<button class="page_num">'+(i+1)+'</button>';
                }
            }
        }

        if(current_page==total_page){
            append_html+='<button class="page_num current_page">'+(i+1)+'</button>';
        }else{
            append_html+='<button class="page_num">'+(i+1)+'</button>';
        }

        append_html+='<button class="next_page">下一页</button><span class="page_total">共 '+total_page+' 页, 到第</span><input class="input_page_num" type="text" value="'+inp_val+'"><span class="page_text">页</span><button class="to_page_num">确定</button>';

        $(obj_box).children('.page_ctrl').append(append_html);
        if(current_page==1){
            $(obj_box+' .page_ctrl .prev_page').attr('disabled','disabled').addClass('btn_dis');
        }else{
            $(obj_box+' .page_ctrl .prev_page').removeAttr('disabled').removeClass('btn_dis');
        }

        if(current_page==total_page){
            $(obj_box+' .page_ctrl .next_page').attr('disabled','disabled').addClass('btn_dis');
        }else{
            $(obj_box+' .page_ctrl .next_page').removeAttr('disabled').removeClass('btn_dis');
        }
    }

    page_even();
    $(obj_box+' .page_ctrl').on('click','button',function () {
        var that=$(this);
        if(that.hasClass('prev_page')){
            if(current_page!=1){
                current_page--;
                that.parent('.page_ctrl').html('');
                page_even();
            }
        }

        else if(that.hasClass('next_page')){
            if(current_page!=total_page){
                current_page++;
                that.parent('.page_ctrl').html('');
                page_even();
            }
        }

        else if(that.hasClass('page_num')&&!that.hasClass('current_page')){
            current_page=parseInt(that.html());
            that.parent('.page_ctrl').html('');
            page_even();
        }

        else if(that.hasClass('to_page_num')){
            current_page=parseInt(that.siblings('.input_page_num').val());
            that.parent('.page_ctrl').html('');
            page_even();
        }
    });

}
